* {
	padding: 0;
	margin: 0;
}

main {
	display: flex;
	justify-content: center;
	align-items: center;
	width: 100%;
	height: 100vh;
	background-color: #282828;
}

main .game-plane {
	position: relative;
	width: 1200px;
	max-width: 1200px;
	height: 900px;
	background-image: url(../image/aaa.jpg);
	background-size: 100% auto;
	box-shadow: 0 2px 30px rgba(255,255,255,0.5);
	overflow: hidden;
}

main .game-plane img { position: absolute; }

.alert {
	position: absolute;
	top: calc(50% - 100px);
	left: 0;
	width: 100%;
	height: 200px;
	background: #FFF;
    box-shadow: 0 0 0 999em rgba(0, 0, 0, 0.5);
}

.alert .content {
	display: grid;
	grid-template-columns: 4fr 6fr;
	grid-template-rows: 100%;
	gap: 20px;
	margin: 0 auto;
	max-width: 1200px;
	width: 100%;
	height: 100%;
}

.alert .content .left {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
}

.alert .content .left * { margin: 5px 5px; }

.alert .content .right {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
}

.alert .content .right input {
	width: 100%;
	display: block;
	box-sizing: border-box;
	padding: 10px;
}

.e { transform: rotate(180deg); }

.b { width: 30px; }

#hit {
	position: absolute;
	top: 20px;
	left: 20px;
	color: #FFF;
}

.end {
	position:absolute;
	top: 0;
	left: 0;
	bottom: 0;
	right: 0;
	margin: auto;
}


